When your start menu hides programs from you because it figures you haven't used them in a while and thus aren't interested, this feature is called Personalized Menus. Knowing that, you can turn it off with the "Use Personalized Menus" checkbox in your start menu's advanced controls. (Not sure which versions of Windows that applies to. If yours isn't doing this, don't worry about it.)
Office XP does the same thing with it's menu items. To change that, right-click the taskbar in any of it's applications, select Customize from the pop-up list, and find the "Always Show Full Menus" checkbox on the Options tab.
...and with that, I think I've finished messing with the UI.